[INFO] cloning repository tazjin/carnix
[INFO] running `"git" "clone" "--bare" "git://github.com/tazjin/carnix.git" "work/cache/sources/gh/tazjin/carnix"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/tazjin/carnix'...
[INFO] running `"git" "clone" "work/cache/sources/gh/tazjin/carnix" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/tazjin/carnix"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/tazjin/carnix'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tazjin/carnix" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/tazjin/carnix"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/tazjin/carnix'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 147b1c219db7e17adac6a4c2890c1c32559bfd59
[INFO] sha for GitHub repo tazjin/carnix: 147b1c219db7e17adac6a4c2890c1c32559bfd59
[INFO] validating manifest of tazjin/carnix on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[ERROR] this task or one of its parent failed!
[ERROR] overridden task result to build-fail:broken
[ERROR] caused by: missing Cargo.toml for tazjin/carnix
[ERROR]